I've seen my share of predictions on network hash.  However, many of the predictions I have seen are based on gut feeling, guesses, and past performance.  Which in a sense are all valid since we probably have a better shot in predicting the weather than the hash-rate for a digital currency.

One of the better predictions I have seen are based on a combination of mainstream news stories, company announcements, and chip fabrication/delivery.  This has brought me to the prediction of a 750 TH/s by the end of the year.

One of the more concrete estimates based on facts was the identification of the blocks and the wallet address of some of these companies who are selling chips.  Then using the BTC transfer amount, the cost per chip, and date of the order combined with the lead time and estimate fabrication time to come up with some network hash numbers that are actually based on something.

So with whatever means you have come up with your network hash prediction, I like to hear what some of you think about its future.